import java.util.Scanner;
public class Test3 {
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            double height = scanner.nextDouble();
            double weight = scanner.nextDouble();

            double a = (double)weight/(height*height);
            if (a<18.5){
                System.out.println("偏瘦");
            }else if (18.5<=a & a < 20.9){
                System.out.println("苗条");
            }else if (a >= 20.9 & a <= 24.9){
                System.out.println("适中");
            }else {
                System.out.println("偏胖");
            }
        }
}
